IRRADIATION


Meaning of IRRADIATION in English

( n. )

The apparent enlargement of a bright object seen upon a dark ground, due to the fact that the portions of the retina around the image are stimulated by the intense light; as when a dark spot on a white ground appears smaller, or a white spot on a dark ground larger, than it really is, esp. when a little out of focus.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.